Deck 1: Radiation and Its Discovery

Question 1

Which of the following is a correct description of the relationship between the wavelength and frequency of the x-ray photon?

A) Wavelength and frequency are directly proportional.
B) Wavelength and frequency are inversely related by the square root of lambda.
C) Frequency and wavelength are inversely related.
D) Wavelength and frequency have no relationship to each other.

Answer 1

Frequency and wavelength are inversely related.

Question 2

Barium platinocyanide was the:

A) type of dark paper Roentgen used to darken his laboratory.
B) material Roentgen used to produce the first radiograph of his wife's hand.
C) metal used to produce the low-vacuum tube.
D) fluorescent material that glowed when the tube was energized.

Answer 2

fluorescent material that glowed when the tube was energized.

Question 3

The first Nobel Prize for physics was received in 1901 by:

A) Marie Curie.
B) William Crookes.
C) Wilhelm Roentgen.
D) Albert Einstein.

Answer 3

Wilhelm Roentgen.

Question 4

An angstrom (Å)is equal to:

A) 10-1 meter
B) 10-10 meter
C) 10-1 foot
D) 10-10 foot

Question 5

X-rays used in radiography have wavelengths that are measured in:

A) angstroms.
B) millimeters.
C) centimeters.
D) hertz.

Question 6

X-rays were at one time called:

A) Becquerel rays.
B) Roentgen rays.
C) Z-rays.
D) none of the above.

Question 7

X-rays have which of the following properties?

A) Electrical
B) Magnetic
C) Chemical
D) A and B
E) A and C

Question 8

When first developed,the branch of medicine using x-rays was called:

A) radiology.
B) radiography.
C) roentgenology.
D) imaging sciences.

Question 9

Which of the following terms could be defined as the instantaneous production of light only during an interaction between a type of energy and some element or compound?

A) Phosphorescence
B) Afterglow
C) Glowing
D) Fluorescence

Question 10

A _____ is a small,discrete bundle of energy.

A) phaser
B) quark
C) photon
D) mesion

Question 11

The first radiograph produced by Roentgen,of his wife's hand,required an exposure time of:

A) 15 s.
B) 150 s.
C) 15 min.
D) 150 min.

Question 12

What type of tube was Roentgen working with in his lab when x-rays were discovered?

A) Crookes tube
B) Fluorescent tube
C) High-vacuum tube
D) Wurzburg tube

Question 13

The speed of light is:

A) 3 × 108 meters per second
B) 3 × 108 miles per second
C) 186,000 miles per second
D) A and B
E) A and C

Question 14

The letter x in x-ray is the symbol for:

A) electricity.
B) the unknown.
C) penetrating.
D) discovery.

Question 15

The Greek symbol lambda (l)represents the x-ray's:

A) wavelength.
B) speed.
C) frequency.
D) quantity.

Question 16

The distance between two successive crests of a sine wave is known as:

A) an angstrom.
B) frequency.
C) the Greek letter nu.
D) wavelength

Question 17

Erythema,an early sign of biologic damage due to x-ray exposure,is:

A) reddening of the skin.
B) a malignant tumor.
C) a chromosomal change.
D) one of the most serious effects of x-ray exposure.

Question 18

The frequency of a wave is the number of waves passing a given point per given unit of time.Frequency is measured in:

A) angstroms.
B) hertz.
C) inches.
D) eV.

Question 19

When were x-rays discovered?

A) October 8, 1985
B) November 8, 1895
C) January 23, 1896
D) August 15, 1902

Question 20

The electrical energy applied to an x-ray tube will be transformed to:

A) heat.
B) light.
C) x-rays.
D) A and B.
E) A and C.

Question 21

X-rays cannot be focused with a lens.

Question 22

An x-ray beam that has photons with many different energies is:

A) homogenous.
B) monoenergetic.
C) heterogeneous.
D) never found.

Question 23

X-rays used in radiography have wavelengths ranging from 3 × 10¹⁹ to:

A) 3 × 108 Hz.
B) 3 × 10-10 Hz.
C) 3 × 1010 Hz.
D) 3 × 1018 Hz.

Question 24

X-rays can:

A) penetrate the human body.
B) be absorbed in the human body.
C) change direction in the human body.
D) A and B only.
E) all of the above.

Question 25

In the formula c = lv,c represents:

A) frequency.
B) the speed of light.
C) wavelength.
D) kinetic energy.

Question 26

In the formula c = lv,v represents:

A) frequency.
B) the speed of light.
C) wavelength.
D) kinetic energy.

Question 27

In conjunction with ALARA,which of the following cardinal principles help to minimize radiation exposure?
I.Time-Increase time exposed to ionizing radiation
II.Time-Decrease time exposed to ionizing radiation
III.Distance-Increase distance from ionizing radiation
IV.Distance-Decrease distance from ionizing radiation
V.Shielding-Maximize use of shielding from ionizing radiation

A) I, III, and V
B) I, IV, and V
C) II, III, and V
D) II, IV, and V

Question 28

X-rays used in radiography have wavelengths ranging from 0.1 to:

A) 0.01 Å.
B) 1 Å.
C) 10 Å.
D) 100 Å.

Question 29

Since Roentgen's discovery in the late nineteenth century,we have learned an enormous amount about the properties of x-rays.

Question 30

X-rays are able to interact with certain materials and produce light energy.

Question 31

X-rays are invisible.

Question 32

It is impossible for x-rays to interact with matter and produce secondary radiation.

Question 33

X-rays will change direction in the presence of a strong magnetic field.

Question 34

The energy of an individual x-ray photon is measured in:

A) frequency.
B) wavelength.
C) kilovolts peak (kVp).
D) electron volts (eV).

Question 35

X-ray photons travel at the speed of light in a vacuum.

Question 36

Chemical changes may occur as a result of exposure to ionizing radiation.

Question 37

X-rays can produce ionization of atoms making up cells,causing damage.

Question 38

X-ray photons are capable of traveling around corners.

Question 39

X-rays produce a slight tingling sensation when they enter the body.

Question 40

X-rays carry a negative charge that causes ionization.

Question 41

Screening for pregnancy is an important task for minimizing unnecessary exposure to a developing fetus.

Question 42

It is the radiographer's responsibility to minimize the radiation dose to the patient,to themselves,and to others in accordance with the As Low As Reasonably Achievable (ALARA)principle.